Measurement of the Top Quark Mass in Dileptonic Top Quark Pair Decays with √s=7 TeV ATLAS Data

被引：0
作者：
Maier, Andreas Alexander [1 ]
机构：
[1] Werner Heisenberg Inst, Max Planck Inst Phys, Fohringer Ring 6, D-80805 Munich, Germany
来源：
PHYSICS OF ATOMIC NUCLEI | 2016年 / 79卷 / 11-12期
基金：
美国国家科学基金会;
关键词：
top quark; mass; ATLAS; template method;
D O I：
10.1134/S1063778816100082
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The top quark mass in dileptonic top quark pair decays was measured using 4.7 fb(-1) of root s =7 TeV proton-proton (pp) collision data recorded by the ATLAS experiment at the LHC in 2011. The event topology is characterized by the presence of two charged leptons, at least two neutrinos and several jets, two of which originate from bottom quarks. Using the template method and the m(lb) observable, defined as the average invariant mass of the two charged lepton plus-jet pairs in each event, the top quark mass is measured to be 173.09 +/- 0.64(stat) +/- 1.50(syst) GeV. This proceeding is based on a preliminary result, which has been superseded meanwhile.
引用
收藏
页码：1471 / 1473
页数：3
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